Performance Improvement of Asymmetrical Multilevel Inverter with Different Optimization Algorithms
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2017, Vol 5, Issue 5
Abstract
This paper presents a new asymmetrical multilevel inverter with Improved Performance by using different Optimization Algorithms. Each module produces 13 levels with four unequal DC sources and 10 switches. The proposed module makes some preferable features with a better quality than similar modules such as the low number of semiconductors and DC sources and low switching frequency. Also, this module is able to create a negative level without any additional circuit such as an Hbridge which results in reduction of voltage stress on switches. Cascade connection of the proposed structure leads to a modular topology with more levels and higher voltages. Selective harmonics elimination pulse width modulation (SHE-PWM) scheme is used to achieve high quality output voltage with lower harmonics. In this paper Particle Swarm Optimization (PSO) and Differential Evolution (DE) methods are used to generate the Pulse widths for selected Harmonic Elimination. MATLAB simulation results are presented to validate the proposed module performance. Module output voltage satisfies harmonics standard (IEEE519) without any filter in output.
Authors and Affiliations
Ch. Manikyalarao, D. Bhavana Rushi, Sk Rizwana
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